Apparatus for treating yarns



April 15; 1952 vc l.. WILLIAMSON 2,592,632

y APPARATUS FOR TREATING YARNS Filed April `25, 194:8

Patented Apr. 15, 1952 APPARATUS FOR TREATING YARNS Ollie L. Williamson, Danville, Va., assignor to Dan River Mills, Incorporated, Danville, Va., a cor- V .Y

poration of Virginia Application April 23, 1948, Serial No. 22,872

This Ainvention relates to an apparatus for treating yarns. Y i

Production of high strength, lowstretch, high density yarns has `been accomplished successfully in the prior art by a treatment of yarn with `a bonding material such as disclosed. `for example, in the Jennings Patent No.` 2,220,958, issued November 12, 1940.` A`Thoroughly treating thread with moistening solutionas inthe Jenningspatent has been difficult vto accomplish, especially with heavier threads, due to the vfailure of the moistening solution to penetrate to the center of the thread. For best results inthe aforementionedtreatment, as. many of the discrete fibers as possible must be first aligned and then bonded in that position. If the iibers in the center of the thread are not iirst treated with moistening solution, `the effect of the subsequentstretching and drying is not beneficial to those particular'bers. It is Well known that by squeezing a once wet yarn and rewetting the same yarn will produce a greater absorption of any given moistening solution. It is also known that a slack yarn will absorb a wetting solution or the like better than a taut yarn.

With this invention it is important to apply thoroughly a controlled amount of any desired 4treating solution to a thread, yarn or the like,

in a continuous process characterized by a` plurality of successive untensioned wettings and Asqueeaings of each individual end, and to :provide means'for successive slack treatments of a`yarn. f Y' Reference is made tocopending application of joint inventors Ollie L. Williamson and Howard Lee Higgins, Serial No. 15,548, filed March 18, 1948, in which a treating machine is disclosed in detail.

In the drawings:

Figure 1 is a side elevation of a machine for wetting yarn.

Figure 2 is a section on line 2--2 of Figure 1.

Referring to Figure 1, a journal arm supports a spindle on which is mounted a supply spool S. Above spool S is a base B on which is mounted a tank or reservoir '22. Directly beside the reservoir as shown in Figure 2, is an upright supporting arm in the lower portion of which is supported a shaft 21 which projects into the reservoir 22. On the shaft is mounted a. dip roll 30. A pulley 3l on shaft 21 is driven by a belt 32 from a. power source in the base B. The top of the upright arm 25 is oiset in a portion 34 to support a bell crank 35 which is 5 claims. (C1. 11s-234) 2 pivotally mounted on the offset portionA 34 by a pin 36. At the corner of the bell crank 35 is a roll 40 positioned directly above the roll 30, Spaced above the roll 40 on the vertical extension ofthe bellcrank 35 is a roll 50. Each of the rolls 40 and 50 are supported on suitable shafts or pins for free rotation on the bell crank 35.

.The horizontally extending arm 52 of the bell crank 35 has a toe portion 53 which serves to cooperate with a thumb screw 154 mounted in a swinging hook 55 on a projection 55 extending upwardly from the base B. It will be noted that the roll 40 is positioned below the pivot point 36 so that a downward movement of the extension 52 will cause pressure between the roll 3D and the roll 40. The roll 40 is preferably formed of a resilientmaterial such as synthetic rubber, while 1the roll 30 is preferably formed of a non-corro sive material such as stainless steel. The roll 50 is provided with a series of spaced peripheral grooves which increase in depth from left to right asshown in Figure 2 and this roll 50 is preferably formed of material which is non-corrosive. On theright hand side of base B,.a spool support is-provided and on this support is atakeup spool T. Between the take-up spool and the roll 50 is a reciprocating guide arm- 62 which may besuitably movedto insure even winding on the take-up spool. i i

To thread the machine, the thumb screw 54 is loosened to free the arm-52.` `This arm may then be lifted to provide clearance betweenA rolls 30 and 40. Yarn is threaded through an eye 64 on the edge of tank 22 andthen wound around rolls 5u and 40 in a series of successive loops until it is taken oli to the guide arm SI2 and the take-up roll T. Suitable means are provided to drive the take-up T from base B but these means are not shown. After threading, the arm 52 is again clamped in place by thumb screw I5l! and a slight pressure applied between the rolls 3D and 40.

To obtain a thorough moistening of a yarn by liquid contained in tank 22, it is preferable that the yarn be repeatedly moistened and squeezed and that such yarn be in a relatively slack condition at the time of moistening. Carrying the yarn around the grooved roll 50 and the squeeze roll 40 in a plurality of loops causes multiple contact of the thread at a plurality of points as it passes the driven dip roll 30. The progressively deeper grooves in roll 50 serve to create a slack condition as the thread progresses from left to right as viewed in Figure 2. Each time the thread 55 or yarn passes the roll 30. it is squeezed and also driven dip roll partially immersed in said solu-` tion, and a pair of rolls freely rotatable on axes parallel to said dip roll, one of saidv pair of rolls having a resilient surface in rolling contact with the dip roll, the other of said` pair of 'rolls having a plurality of spaced peripheralgreoves increasing gradually in depth from end to end, said dip roll being driven in a direction whereby a series Y of successiveloops of thread being treated originating at the shallowest of said grooves maybe passed in contact with'said dipV roll in varying states "of decreasing tension to the deepest of sai'dgrooves. Y

In an'apparatus fortre'atingxthread with a liquid, Aa supply tank for treating solutions, a driven dip'irollipartially immersed in said solution, andl apair ofrolls freely rotatable Von axes parallel tofsaid 'dip irol-l, one Vof said pair of rolls having a resilient' surface in rolling contactwith -,thedip'rolL-the'other (if-'said pair of rolls having a-.pluralitykof spaced peripheral grooves increasing :gradually indepth from end vto end, and means -rfor adjusting the axialrelation between Vsaiddlp :rolland the rollin ycontact therewith VWithout 'changing the axial relation between said pair-'of rolls, said dip roll being driven in Yadi- -i'eetionlvvherebyra seriesfof-successive loops of ythread being treated originating' at the shallowest orsaid grooves may be Vpasselin contact with said dip roll in varyingstates of decreasing tensiontothe deepest of `said grooves.

f L3. Inanapparatus for treatingthread with a 4 of said grooves may be passed in contact with said dip roll in varying states of decreasing tension to the deepest of said grooves, said last named means being arranged to effectrpressure contact between said dip roll and the rst roll of said pair to cause squeezing of the thread passing therebetween. Y

4. In an apparatus for Atreating 'thread with a liquid,V asupply ntank r`for treating solutions, a driven dip roll partially immersed in said solu- 1 tion, a, bell crank pivoted on an axis parallel toV the axis of said dip roll at a point spaced from 'the periphery thereof, a squeeze roll mounted on said ,bell-crank between the dip roll and the bell liquid, asuppIy tank for treating solutions, a Y

drivendip roll partiallyimmersed insaid solution, and a'pair ofrolls freely rotatable-'on axes parallel to said dip=1oll, one ofY said pairs -Uf-rolls having a resilient'surface in rolling contact with the dip roll, the other of-fsaidpairof'rrolls having a ay plurality of l spaced-peripheralA grooves increas ing gradually in depth from end to end, `and means for` adjusting ,the axial relation lbetween rection vwhereby a series of successive loops of Vthread-beingtreated originating at the shallowest crank, Ta tension control roll mounted in spaced parallel axial relation to said squeeze roll on said bell crank, and means for adiustably positioning said bell'cra'nk to exert pressure between said dip roll and squeeze roll. Y

5. In an apparatus for treating thread with a liquid, a ysupply tank 1 for treating solutions, a driven dip roll partially immers'edfin saidj-fsolution, a bell crank pivoted on ganl axsparallel to the ax-is of Vsaid dip roll'atfa-point-spaced'from the, peripherythereof, a squeeze-roll mounted on said ybell crank between the diproll .and thelbell crank, a tension4 control roll mounted in spaced paralel axial relation to said squeeze rollcnisaid bell crank, and means for adjvustablypositioxing said bell crank to exert pressure between said dip roll and squeezerollpsaidtension controlroll havingV a-plurality ofvperipheral spaced grooves of gradually increasing depth lfrom endfto end, said dip roll beingidrivenin a direction whereby a series -of successive loops around said lsqueeze roll and tension control roll of thread "being treated originating at Athe shallowe'st f `said grooves may bev passed in contact 4withsaid dip roll in varying states of decreasing tensionto the deepest of said grooves.

A Y 'OLU'L WEHAMSN;

REFEaENCasf Crm1) The following references are `m?record,Yin-fthe le of this patent:

UNITED STATES 1 PATENTS Frohwein sans Junegr2d3`1942 

